<!DOCTYPE HTML>
<html>
<head>
    <title>token2</title>
</head>

<body>
Welcome token2<br/>
<input id="text" type="text" /><button onclick="send()">Send</button>    <button onclick="closeWebSocket()">Close</button>
<div id="message">
</div>
</body>

<script type="text/javascript">
    var websocket = null;

    //判断当前浏览器是否支持WebSocket
    if('WebSocket' in window){
        connect();
    }
    else{
        alert('Not support websocket')
    }

	function connect(){
		websocket = new WebSocket("ws://localhost:8080/websocket-demo/another/websocket/connect/token2");
		//连接发生错误的回调方法
		websocket.onerror = function(){
			setMessageInnerHTML("error");
		};

		//连接成功建立的回调方法
		websocket.onopen = function(event){
			setMessageInnerHTML("open");
		}

		//接收到消息的回调方法
		websocket.onmessage = function(event){
			setMessageInnerHTML(event.data);
		}

		//连接关闭的回调方法
		websocket.onclose = function(){
			setMessageInnerHTML("close");
			//connect();
		}
	}

    //监听窗口关闭事件，当窗口关闭时，主动去关闭websocket连接，防止连接还没断开就关闭窗口，server端会抛异常。
    window.onbeforeunload = function(){
        websocket.close();
    }

    //将消息显示在网页上
    function setMessageInnerHTML(innerHTML){
        document.getElementById('message').innerHTML += innerHTML + '<br/>';
    }

    //关闭连接
    function closeWebSocket(){
        websocket.close();
    }

    //发送消息
    function send(){
        var message = document.getElementById('text').value;
        websocket.send(message);
    }
</script>
</html>